In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. ... Thus, the exact number of hydrogen bonds formed per molecule varies. Cohesion. Molecules of pure substances are attracted to themselves. Yeyshehehisjsjwjwhxhdjnsnsnsnsnssnndndndnddndndndndndndndndndbdbdbdbbdbdbdbdbdbdbdndndnd
